[Reland] Post loading tasks on the appropriate WebFrameScheduler's queue

third_party/WebKit/public/platform/WebTaskRunner.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebTaskRunner_h
 #define WebTaskRunner_h
 
 #include "WebCommon.h"
 
 #ifdef INSIDE_BLINK
@@ skipping 21 matching lines @@
 
     // Schedule a task to be run after |delayMs| on the the associated WebThread.
     // Takes ownership of |Task|. Can be called from any thread.
     // TODO(alexclarke): Remove this when possible.
     virtual void postDelayedTask(const WebTraceLocation&, Task*, long long delayMs) {}
 
     // Schedule a task to be run after |delayMs| on the the associated WebThread.
     // Takes ownership of |Task|. Can be called from any thread.
     virtual void postDelayedTask(const WebTraceLocation&, Task*, double delayMs) {}
 
+    // Returns a clone of the WebTaskRunner.
+    virtual WebTaskRunner* clone() { return nullptr; }

[Sami, 2015/09/29 11:22:47]

nit: I think these can be pure virtual now that we're in the same repo.

[alex clarke (OOO till 29th), 2015/09/29 16:10:36]

Done.

+
 #ifdef INSIDE_BLINK
     // Helpers for posting bound functions as tasks.
     typedef Function<void()> ClosureTask;
 
     void postTask(const WebTraceLocation&, PassOwnPtr<ClosureTask>);
     // TODO(alexclarke): Remove this when possible.
     void postDelayedTask(const WebTraceLocation&, PassOwnPtr<ClosureTask>, long long delayMs);
     void postDelayedTask(const WebTraceLocation&, PassOwnPtr<ClosureTask>, double delayMs);
 #endif
 };
 
 } // namespace blink
 
 #endif // WebTaskRunner_h